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Bath Substation Expansion Project

DP&L has submitted an application to the Ohio Power Siting Board to expand the Bath Substation in Greene County.

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This project will provide improved grid reliability, operational flexibility, and operating capacity to the Dayton metro area by installing a second 345/138 kilovolt (kV) transformer at the Bath Substation.

Specifically, the project will help to prevent transmission system overloads in the Dayton metro area of the DP&L transmission system under various outage conditions, complying with mandatory Federal Energy Regulatory Commission (FERC)/ North American Electric Reliability Corporation (NERC) reliability standards.

Frequently Asked Questions

Where is the Bath Substation located?

The Bath Substation is located in Xenia, Greene County, Ohio.

When will the work take place?

Estimated Project Schedule

August 2019
  • File Construction Notice Application with Ohio Power Siting Board (OPSB)
December 2019
  • OPSB approval

June 2020
  • Construction begins
June 2021
  • Project in-service

Indicates the current project stage.

Will electric service be interrupted?

During construction, customers should not notice interruption of their electric service. If an outage is required for a short period, the affected customer(s) will be notified before the outage to limit the inconvenience.

Where can I get more information?

Visit the OPSB website to view the application and for more information. The Case Number for DP&L’s Bath Substation Expansion Project is 19-1345-EL-BNR.

To contact DP&L about the project or request an electronic copy of the application, please leave a message at 937-331-4314 or email You will receive a response within 1-2 business days.

Page last updated February 7, 2020.